package com.It;
//反转
public class test2 {
    public static void main(String[] args) {
        int[] arr={19,28,37,46,50};
        exchangeElement(arr);
        printArray(arr);
    }
    //交换元素
    public static void exchangeElement(int[] arr){
        for(int start=0,end=arr.length-1;start<end;start++,end--){
               int temp;
               temp = arr[start];
               arr[start] = arr[end];
               arr[end] = temp;
        }
    }
    //遍历数组
    public static void printArray(int[] arr){
        System.out.print("[");
        for(int i=0;i<arr.length;i++){
            if(i==arr.length-1)
                System.out.print(arr[i]);
            else
                System.out.print(arr[i]+", ");
        }
        System.out.println("]");
    }
}
